As far as the assessment on shock-resisted property of large equipment is concerned, experiments on real model with the size ratio of 1:1 cost enormously, and the miniatures can not show their original property. Calculating assessment based on finite element model is an effective method to solve the problem. Although the established finite element model is simplified in a certain degree, there are also 2000 nodes, 61000 degrees. All together, two tanks have 19658 elements, in which there are 10268 shell elements, 1604 beam elements, 680 mass elements, 3952 3-D solid elements, 6112 fluid elements, 336 spring-damper elements, 2216 pipe elements. Also, there are 52 kinds of geometric parameters in model to mark thickness, area, and moments of inertia of different parts. In virtue of ANSYS software, the static stress, temperature stress, model analysis and shock-resisted property of liquid oxygen tank in vessels are calculated based on finite element method. As the speciality of each member is fully considered, the model has high accuracy and perfect calculation results are got, which confirms the efficiency of this method in evaluating the shock-resisted property of large equipment.
Safety assessment of impact response for the liquid oxygen tank
2002
4 Seiten, 2 Quellen
Conference paper
English
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